21257672

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{26309}}^1$

素因数の和:26416

約数の個数: 16

約数和(自身を含む): 40254300

約数和(自身を除く): 18996628

約数列:

[1, 2, 4, 8, 101, 202, 404, 808, 26309, 52618, 105236, 210472, 2657209, 5314418, 10628836, 21257672]

約数ペア:

[(1, 21257672), (2, 10628836), (4, 5314418), (8, 2657209), (101, 210472), (202, 105236), (404, 52618), (808, 26309)]